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Synthesis of orthorhombic phase Pr-1(Ba0.55Pr0.45)(2)((Cu0.95Fe0.05)-Fe-57)(3)O-z and a Mossbauer study of the local oxygen environment of probe iron atomsстатья
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Kravchenko A.V., Gudilin E.A., Bezverkhii I.S., Predtechenskaya D.M., Oleinikov N.N., Tret'yakov Y.D.
- Журнал: Russian Journal of Inorganic Chemistry
- Том: 45
- Номер: 7
- Год издания: 2000
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 983
- Последняя страница: 989
- Аннотация: The single-phase samples Pr1+xBa2-xCu3Oz and Pr1+xBa2-x(Cu0.95Fe0.05)(3)O-z were synthesized for the first time. The phases are characterized by the limiting degree of substitution of praseodymium for barium, x = 0.9, and by the orthorhombic distortion of the unit cell (a = 3.888-3.891 Angstrom, b = 3.843-3,848 Angstrom, c = 11.556-11.635 Angstrom). Introducing the Mossbauer label Fe-57 into the sample of the composition Pr1.9Ba1.1 (Cu0.95Fe0.05)(3)O-z made it possible to study the local structure of the synthesized orthorhombic phase. Experimental data permit the assumption that the Pr1.9Ba1.1Cu3Oz phase is isostructural with Nd1.9Ba1.1Cu3Oz and contains extra oxygen atoms located in fixed positions, which are vacant at x = 0, in the oxygen-deficient copper-oxygen planes.
- Добавил в систему: Гудилин Евгений Алексеевич